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Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 1310nm 10km LC Duplex SMF DDM Optical Transceiver Module

Product No: 53833
75 Reviews
7.4K Sold
US$ 189.90  US$ 299.00
1549 in real-time stock, 18 Jun, 2026

Free Shipping over US$ 79.8

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5-Year Warranty 30-Day Returns 90-Day Exchange
Warranty
Providing industry-leading limited lifetime warranty.
Please check our warranty policy for details.
Returns & Exchange
Exchanges caused by the customer's reasons will not be accepted.
Please ensure that the item you're returning is repackaged with all the cords, adapters, and documentation included when you receive it.
Please check our Return Policy for details.
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1. Rate: 100G; Connector: LC; with DDM
2. DFB+PIN; Low Power Consumption ≤3.5W
3. Applied in Campus Network, Data Center and Enterprise Core Layer
4. Compatible with 200+ Vendors
5. Hot Pluggable QSFP59 MSA Compliant
See more

Specifications

Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 Optical Transceiver Module (SMF, 1310nm, 10km, LC, DDM)

 

The Arista Networks QSFP-100G-LR4 compatible optical transceiver module is designed with duplex LC connectors, reaching a link up to 10km over single-mode fiber(SMF). QSFPTEK manufactured 100GBASE-LR4 QSFP28 transceiver module is compliant with IEEE 802.3ba 100GBASE-LR4, QSFP28 MSA standard. Besides, DDM (digital diagnostics monitoring) function is supported on the 100G fiber optic transceiver to achieve real-time operating parameters monitoring. With these features, this 100G QSFP28 transceiver is widely applied in 100G telecom connections, data centers, high-performance computing networks, enterprise core and distribution layers, campus networks, etc.

 

Part Number:

QT-QSFP28-LR4

Vendor Name:

QSFPTEK

Form Factor:

QSFP28

Data Rate:

103.125Gbps (4x 25.78Gbps)

Wavelength:

1295~1310nm

Distance:

[email protected]

Connector:

Duplex LC

Cable Type:

OS2 SMF

Transmitter:

 4x LAN WDM DML (DFB)

Receiver Type:

PIN

TX Power:

-4.3~4.5dBm

Receiver Sensitivity:

<-10.6dBm

Power Consumption:

≤4W

Modulation Format:

NRZ

DDM:

Support

Bit Error Ratio (BER):

1E-12 (without FEC)

Protocols:

 IEEE 802.3ba, IEEE 802.3bm, SFF-8665, SFF-8636, 100G CWDM4 MSA, QSFP28 MSA

Warranty:

5 Years

Quality Testing Program
Quality Certifications

Features

  • 1. High Reliablility and Best Price
    Proudly self-producing and rigorous testing, QSFPTEK is dedicated to delivering cost-effective products with high reliability and performance at trade price.
  • 2. Wide Application Scenarios
    Fully compatible with almost all Arista devices. Ideal for 100G telecom connections, data center, high-performance computing networks, enterprise core and distribution layers etc.
  • 3. Protocols
    Compliant with IEEE 802.3ba 100GBASE-LR4, IEEE 802.3bm, QSFP28 MSA, SFF-8665, SFF-8636.
  • 4. Quality Certifications
    Backed by CE, FCC, ROSH, ISO9001.

Applications

Scenario 1: 100G Switch to 100G Switch Direct Connectivity

QT-QSFP28-LR4 Scenario 1 100G Switch to 100G Switch Direct Connectivity  


 

Scenario 2: 100G Switch to 100G NIC Direct Connectivity

QT-QSFP28-LR4 Scenario 2 100G Switch to 100G NIC Direct Connectivity  

Product details

Various Switch Tests

 

Every module is quality tested for compatibility in the multi-brand switches environment, which guarantees flawless operations.

 

 


 

Tested in The Host Device to Prove Interoperability

 

Every unit sold undergoes rigorous quality testing, to ensure compatibility in the target switch environment, guaranteeing perfect operation.

 

QSFPTEK Test Rack

 


 

Comprehensive Testing

 

Every module is qualified through rigorous procedures and advanced equipment to ensure high-quality and reliable optical devices for you.

 

QSFPTEK Test Devices

 


 

100G QSFP28 Model Contrast Table

        

Part Number

QT-QSFP28-SR4

QT-QSFP28-PSM4

QT-QSFP28-IR4

QT-QSFP28-LR4

QT-QSFP28-CWDM-LR4

QT-QSFP28-ER4 (Rx SOA)

QT-QSFP28-ZR4

Image

Wavelength

850nm

1310nm

1271~1331nm

1310nm

1271~1331nm

1310nm

1310nm

Max Distance

100m

500m

2km

10km

10km

40km

80km

Cable Type

OM3/OM4 MMF

OS2 SMF

OS2 SMF

OS2 SMF

OS2 SMF

OS2 SMF

OS2 SMF

Connector

MPO/MTP-12

MPO/MTP-12

LC Duplex

LC Duplex

LC Duplex

LC Duplex

LC Duplex

Tx Power(dBm)

-8.4~+2.4

-9.4~+2

-6.5~+2.5

-4.3~+4.5

-6.5~+2.5

-2.9~+4.5

+2~+7

Rx Sensitivity(dBm)

-10.3

-12.66

-11.5

-10.6

-11.5

-20.9

-27

Max Power Consumption

2.5W

3.5W

3.5W

4W

3.5W

5W

5.5W

Source

VCSEL+PIN

DFB+PIN

CWDM DFB+ PIN

EML+PIN

CWDM DFB +PIN

4x EML+SOA+PIN

EML+SOA+PIN

Operating Temperature

0~70°C

0~70°C

0~70°C

0~70°C

-40~85°C (Available)

0~70°C

0~70°C

-20~85°C (Available)

0~70°C

-40~85°C (Available)

 

Questions & Answers

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  • William R United States of America
    2026-02-05

    The module delivers consistent performance and integrates well with our switches. Documentation could be clearer, but the product itself is dependable.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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  • Matthew United States of America
    2025-12-05

    I purchased the 100GBASE-LR4 QSFP28 module for our data center upgrade, and it has been working well. Their technical team also offered free support for my network setup, which made the whole process smooth.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

    Helpful

    0

  • Scott United States of America
    2025-11-07

    I received the package and have already started using some of the optical transceivers. The 100G LR4 modules perform perfectly, and everything works as expected. We're very pleased with the quality and reliability of your products.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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    0

  • Aramis United Kingdom
    2025-10-17

    I've been ordering transceivers from them regularly and have never encountered any issues thanks to their strict quality control. Truly proud of QSFPTEK's consistent reliability.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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  • Giacobbe United Kingdom
    2025-08-29

    By the way, I just want to say this has been one of the best customer service experiences I've ever had. I'll definitely be coming back and recommending you to others.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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    0

  • Hayden United States of America
    2025-08-01

    Just wanted to say—this has been one of the best customer service experiences I've ever had. I'll definitely be a returning customer and will gladly recommend you to others.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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    0

  • Joseph Leo United States of America
    2024-05-27

    This module is working flawlessly on my Arista 7050. I will come back for the next project, nice try!

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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    0

  • SNielsen United States of America
    2022-12-23

    Bought these as a cheap alternative for my Arista switch. They work fine so far. Will buy again from them if needed.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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    0

  • Christian Stout United States of America
    2022-12-03

    Worked with 7280SR3 Series switches over OS2 duplex fiber and achieved an 8.2km transmission between two branch offices.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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    0

  • J. Renteria United States of America
    2022-11-30

    What is there to say? The price was great. Module is as described. Worked well in our Arista switches, no problems. Fast delivery will made product and certainly.

    Transceivers typeQSFP-100G-LR4

    CompatibleArista

    Verified Purchase

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    0

Video

Resources

  • PDF Document
    QT-QSFP28-LR4 Datasheet.pdf
  • PDF Document
    Transceiver Module User Guide.pdf
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Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 1310nm 10km LC Duplex SMF DDM Optical Transceiver Module

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Transceivers type QSFP-100G-LR4

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Mark

2023-12-15
This product works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent value fo ct works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent valur money!

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Arista Networks QSFP-100G-LR4 Compatible 100GBASE-LR4 QSFP28 1310nm 10km LC Duplex SMF DDM Optical Transceiver Module
US$ 299.00
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